摘要
The Ceshui Formation coal is mostly anthracite and its metamorphism has been lessdocumented. By analyzing systematically the reflectance of vitrinite and the results of X-raydiffraction of the Ceshui Formation coal in the Lianyuan coal basin, the spatial variation characteristics of coal ranks, coal metamorphic regions, the extension of coal metamorphic beltS, coalmetamorphic gradients, coal chemical structure and the effect on the degree of metarnorphismof heat-prediction and -storage conditions, babied depth Of the Indosinian-Yenshanian granitesat the margins of the Lianyuan coal basin are discussed. The research results in conjunction ofthe features of regional hydrothermal alterations, endogenetic deceits with the Ceshui Formation coal measures, and the development of secondary vesicles indicate that the telemagmaticmetamorphism is the main factor leading to the metamorphism of the Ceshui Formation coal inthe region studied.
The Ceshui Formation coal is mostly anthracite and its metamorphism has been lessdocumented. By analyzing systematically the reflectance of vitrinite and the results of X-raydiffraction of the Ceshui Formation coal in the Lianyuan coal basin, the spatial variation characteristics of coal ranks, coal metamorphic regions, the extension of coal metamorphic beltS, coalmetamorphic gradients, coal chemical structure and the effect on the degree of metarnorphismof heat-prediction and -storage conditions, babied depth Of the Indosinian-Yenshanian granitesat the margins of the Lianyuan coal basin are discussed. The research results in conjunction ofthe features of regional hydrothermal alterations, endogenetic deceits with the Ceshui Formation coal measures, and the development of secondary vesicles indicate that the telemagmaticmetamorphism is the main factor leading to the metamorphism of the Ceshui Formation coal inthe region studied.
关键词
煤田
岩浆
变质作用
湖南
花岗岩
Ceshui Formation coal
telemagmatic metamorphism
characteristic
Lianyuan coal basin
